Jeep Gladiator 2020–2021 — technical service bulletin
Bulletin S2118000011 · NHTSA communication 10221631 · issued Jul 27, 2021
Technical service bulletin
communication type
Electrical System
component
2020–2021
model years
5
vehicle entries
Official summary
Diagnostic Trouble Code (DTC) P049B ? EGR B Insufficient Flow Detected, Additional Diagnostics.
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.